would charging a battery with a motor reduce the battery's life span?

I know that charging and discharging a battery is what "drains it's life" because it holds less and less of a charge each cycle, but is it the amount of charging and discharging, or just the number of times it's being charged or discharged?

110100101108 years ago
amount too. different types of batteries like different discharge depths lead acid dont like deep discharges li ion and nimh are flexible. its recommended to not discharge fully most of the times and do sometimes ni cd need full discharges to not get the memory effect failure mode